if it is displayed below “Registered:” one will probably not miss to edit it, but it could be too much information. I think it makes sense to limit the fields to available versions. So one may also get informed that there is a newer version available when posting a question. If it is normal text where I can even enter Wifi 3.0.0 the people will get crazy as this version is not yet available. These values would be nice:
(standalone or servlet engine and version like Tomcat 5.5 if one is using the .war file)
Database vendor, version and OS
But if one is allowed to supply so much information it may be better that the user can select which information will be displayed for a question as its footer, separated just like the headline.
Wifi 2.6.2 / WindowsXP / JDK 1.5.0_06 / Tomcat 5.5